Inserts an item into the System.Web.Caching.Cache object with a cache key to reference its location, using default values provided by the System.Web.Caching.CacheItemPriority enumeration.
This method will overwrite an existing cache item whose key matches the key parameter. The object added to the cache using this overload of the Insert method is inserted with no file or cache dependencies, a priority of CacheItemPriority.Default, a sliding expiration value of Cache.NoSlidingExpiration, and an absolute expiration value of Cache.NoAbsoluteExpiration.